Spin fluctuation and local magnetism of isolated Fe impurities in Pd1-xVx alloys studied by time differential perturbed angular distribution spectroscopy

被引:1
作者
Mohanta, S. K. [1 ]
Srivastava, S. K. [2 ]
Mishra, S. N. [1 ]
机构
[1] Tata Inst Fundamental Res, Homi Bhabha Rd, Bombay 400005, Maharashtra, India
[2] IIT, Dept Phys, Kharagpur, W Bengal, India
来源
HYPERFINE INTERACTIONS | 2016年 / 237卷
关键词
Local moment; Spin fluctuation; TDPAD; QUANTUM CRITICALITY; MOMENTS; ELECTRON; METAL;
D O I
10.1007/s10751-016-1327-0
中图分类号
O64 [物理化学(理论化学)、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号
070203 ; 070304 ; 081704 ; 1406 ;
摘要
The magnetic moment and spin fluctuation temperature of isolated Fe impurity atoms in Pd1-xVx (0 <= x <= 0.15) alloys have been studied by time differential perturbed angular distribution (TDPAD) technique. With increasing V content in Pd matrix, a large non-linear reduction of the local magnetic moment accompanied with an exponential increase of the spin fluctuation temperature T-SF has been observed. At and beyond x = 0.12, the Fe atoms are found to be nonmagnetic. As an important new feature, T-SF is observed to vary quadratically with composition dependent changes in host spin polarization.
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页数:6
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